Already in its 6th Printing! 'Culture as Mitsubishi, Mitsui, Sumitomo,' a Must-Read for Business Professionals, Sells Exceptionally Well
Asukashinsha Co., Ltd. announced that 'Culture as Mitsubishi, Mitsui, Sumitomo' (authored by Kiyohiro Yamakawa) has gone into its 6th printing due to strong sales. This book, written by an author with over 30 years of experience as an economic journalist, comprehensively covers essential knowledge about the Mitsubishi, Mitsui, and Sumitomo groups.
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- 📰 Published: May 8, 2026 at 01:00
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Asukashinsha Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; Representative Director and President: Naohisa Doi) announced that the book 'Culture as Mitsubishi, Mitsui, Sumitomo' (authored by Kiyohiro Yamakawa), published by them, has gone into its 6th printing due to strong sales!
The author, with over 30 years of experience as an economic journalist, has utilized his extensive knowledge to conduct a comprehensive investigation, covering essential information about Mitsubishi, Mitsui, and Sumitomo!
"When entertaining a Mitsubishi-affiliated client, you must serve Kirin Beer."
Have you ever heard of such "rules"?
In fact, Kirin Beer is part of the Mitsubishi Group. If you are conscious of the "group," finding establishments that serve Kirin Beer is an important skill for a business person.
Conversely, if you were to choose a venue that serves Sapporo Beer, which is Mitsui-affiliated, for a business dinner... while it might not determine everything, you might be perceived as someone who "doesn't get it."
In this way, the three major groups of Mitsubishi, Mitsui, and Sumitomo have numerous "origins and relationships that business professionals should know."
This book covers not only the history of the three major groups but also provides detailed information on their main companies, including their origins, relationships, current stock prices, employee numbers, and even rankings by university employment, making it truly a "cultural book" in its volume, explaining each group.
Why does Mitsubishi emphasize "organization"? Why does Mitsui have a "free atmosphere"? Why does Sumitomo feel a "strong bond"? Understanding the history of each group allows for a deeper comprehension of their character.
Recommended by Azabu Keibajo, author of 'Reiwa Gan-nen no Jinsei Game'!
"I wish I had read this during my job hunt!"
"History and geopolitics... A surprising book that verbalizes the 'atmosphere' of the Japanese economy."
This is a business textbook for those entering society and those working in the core of Japan's business world! It is full of knowledge that you "think you know but don't."
## Table of Contents
### Introduction — Why is 'Culture as Mitsubishi, Mitsui, Sumitomo' necessary?
### Chapter 1: The Character of the Three Groups Understood from History
- "Mitsubishi of Organization" born from growth with the nation
- "Mitsui of People" brought about by a manager-centric system
- "Sumitomo of Unity" coexisting rational management and "family precepts"
- A thorough comparison of the unique colors of Mitsubishi, Mitsui, and Sumitomo understood from history
### Chapter 2: The Position of Major Companies in the Mitsubishi Group
- Dissecting the strongest lineup of "Mitsubishi of Organization," boasting ironclad unity
- Mitsubishi Group ① Mitsubishi Heavy Industries: Japan's leading heavy industry manufacturer
- Mitsubishi Group ② Mitsubishi Corporation: The global "trading company" handling everything from cup noodles to space
- Mitsubishi Group ③ MUFG Bank: The red bank, a crossroads of tradition and transformation
- Mitsubishi Group ④ Mitsubishi Estate: The owner of Marunouchi challenges Japan's tallest building
- Mitsubishi Group ⑤ Mitsubishi Electric: What was gained and lost by breaking away from a complacent business style
- Mitsubishi Group ⑥ Mitsubishi UFJ Trust and Banking: The "unsung hero" of Marunouchi
- Mitsubishi Group ⑦ Mitsubishi Materials: The "materials trading company" supporting coins and rockets
- Mitsubishi Group ⑧ Mitsubishi Chemical Group: The complex history of a "giant that keeps changing its name"
- Mitsubishi Group ⑨ Tokio Marine Holdings: The top player in the non-life insurance industry, not bearing the "Mitsubishi" name
- Mitsubishi Group ⑩ Meiji Yasuda Life Insurance: A unique insurance company integrated from two former major zaibatsu
- Mitsubishi Group ⑪ Nippon Yusen: The trajectory of "Nippon Yusen of the Sea," originating from the group but not bearing the "Mitsubishi" name
- Mitsubishi Group ⑫ AGC: A lone wolf consistently since the "Asahi Glass" era
- Mitsubishi Group ⑬ Kirin Holdings: The group's leading food company betting on "health science"
### Chapter 3: The Position of Major Companies in the Mitsui Group
- The power of a free and uninhibited federation, "Mitsui of People" where personalities clash
- Mitsui Group ① Mitsui & Co.: The epitome of "Mitsui of People," a representative of the group
- Mitsui Group ② Mitsui Fudosan: A pioneer of "skyscrapers" and a driving force behind Nihonbashi
- Mitsui Group ③ Sumitomo Mitsui Banking Corporation: The forbidden merger drama of two major zaibatsu
- Mitsui Group ④ Sumitomo Mitsui Trust Bank: Japan's only specialized professional group
- Mitsui Group ⑤ Mitsui Chemicals: A leading presence chasing Mitsubishi and distinguishing itself from Sumitomo
- Mitsui Group ⑥ Mitsui E&S: Abandoning its origin in "shipbuilding" to become a world-leading engine manufacturer
- Mitsui Group ⑦ Mitsui Kinzoku: Facing industrial diseases and the counterattack of "ultra-thin copper foil" supporting smartphones
- Mitsui Group ⑧ Toray: A complete turnaround from a declining industry to the development of "HEATTECH"
- Mitsui Group ⑨ Japan Steel Works: Old-established technology supporting everything from "cannons" to "EV batteries"
- Mitsui Group ⑩ MOL: A pioneer of "Mitsui + Sumitomo," and the face of "Mitsui of the Sea"
- Mitsui Group ⑪ Mitsui Sumitomo Insurance: From struggles to find merger partners to becoming the industry leader
- Mitsui Group ⑫ MODEC: A small elite unit supporting offshore energy plants
- Mitsui Group ⑬ Isetan Mitsukoshi Holdings: The "Mitsukoshi" that created Japan's department stores
The author, with over 30 years of experience as an economic journalist, has utilized his extensive knowledge to conduct a comprehensive investigation, covering essential information about Mitsubishi, Mitsui, and Sumitomo!
"When entertaining a Mitsubishi-affiliated client, you must serve Kirin Beer."
Have you ever heard of such "rules"?
In fact, Kirin Beer is part of the Mitsubishi Group. If you are conscious of the "group," finding establishments that serve Kirin Beer is an important skill for a business person.
Conversely, if you were to choose a venue that serves Sapporo Beer, which is Mitsui-affiliated, for a business dinner... while it might not determine everything, you might be perceived as someone who "doesn't get it."
In this way, the three major groups of Mitsubishi, Mitsui, and Sumitomo have numerous "origins and relationships that business professionals should know."
This book covers not only the history of the three major groups but also provides detailed information on their main companies, including their origins, relationships, current stock prices, employee numbers, and even rankings by university employment, making it truly a "cultural book" in its volume, explaining each group.
Why does Mitsubishi emphasize "organization"? Why does Mitsui have a "free atmosphere"? Why does Sumitomo feel a "strong bond"? Understanding the history of each group allows for a deeper comprehension of their character.
Recommended by Azabu Keibajo, author of 'Reiwa Gan-nen no Jinsei Game'!
"I wish I had read this during my job hunt!"
"History and geopolitics... A surprising book that verbalizes the 'atmosphere' of the Japanese economy."
This is a business textbook for those entering society and those working in the core of Japan's business world! It is full of knowledge that you "think you know but don't."
## Table of Contents
### Introduction — Why is 'Culture as Mitsubishi, Mitsui, Sumitomo' necessary?
### Chapter 1: The Character of the Three Groups Understood from History
- "Mitsubishi of Organization" born from growth with the nation
- "Mitsui of People" brought about by a manager-centric system
- "Sumitomo of Unity" coexisting rational management and "family precepts"
- A thorough comparison of the unique colors of Mitsubishi, Mitsui, and Sumitomo understood from history
### Chapter 2: The Position of Major Companies in the Mitsubishi Group
- Dissecting the strongest lineup of "Mitsubishi of Organization," boasting ironclad unity
- Mitsubishi Group ① Mitsubishi Heavy Industries: Japan's leading heavy industry manufacturer
- Mitsubishi Group ② Mitsubishi Corporation: The global "trading company" handling everything from cup noodles to space
- Mitsubishi Group ③ MUFG Bank: The red bank, a crossroads of tradition and transformation
- Mitsubishi Group ④ Mitsubishi Estate: The owner of Marunouchi challenges Japan's tallest building
- Mitsubishi Group ⑤ Mitsubishi Electric: What was gained and lost by breaking away from a complacent business style
- Mitsubishi Group ⑥ Mitsubishi UFJ Trust and Banking: The "unsung hero" of Marunouchi
- Mitsubishi Group ⑦ Mitsubishi Materials: The "materials trading company" supporting coins and rockets
- Mitsubishi Group ⑧ Mitsubishi Chemical Group: The complex history of a "giant that keeps changing its name"
- Mitsubishi Group ⑨ Tokio Marine Holdings: The top player in the non-life insurance industry, not bearing the "Mitsubishi" name
- Mitsubishi Group ⑩ Meiji Yasuda Life Insurance: A unique insurance company integrated from two former major zaibatsu
- Mitsubishi Group ⑪ Nippon Yusen: The trajectory of "Nippon Yusen of the Sea," originating from the group but not bearing the "Mitsubishi" name
- Mitsubishi Group ⑫ AGC: A lone wolf consistently since the "Asahi Glass" era
- Mitsubishi Group ⑬ Kirin Holdings: The group's leading food company betting on "health science"
### Chapter 3: The Position of Major Companies in the Mitsui Group
- The power of a free and uninhibited federation, "Mitsui of People" where personalities clash
- Mitsui Group ① Mitsui & Co.: The epitome of "Mitsui of People," a representative of the group
- Mitsui Group ② Mitsui Fudosan: A pioneer of "skyscrapers" and a driving force behind Nihonbashi
- Mitsui Group ③ Sumitomo Mitsui Banking Corporation: The forbidden merger drama of two major zaibatsu
- Mitsui Group ④ Sumitomo Mitsui Trust Bank: Japan's only specialized professional group
- Mitsui Group ⑤ Mitsui Chemicals: A leading presence chasing Mitsubishi and distinguishing itself from Sumitomo
- Mitsui Group ⑥ Mitsui E&S: Abandoning its origin in "shipbuilding" to become a world-leading engine manufacturer
- Mitsui Group ⑦ Mitsui Kinzoku: Facing industrial diseases and the counterattack of "ultra-thin copper foil" supporting smartphones
- Mitsui Group ⑧ Toray: A complete turnaround from a declining industry to the development of "HEATTECH"
- Mitsui Group ⑨ Japan Steel Works: Old-established technology supporting everything from "cannons" to "EV batteries"
- Mitsui Group ⑩ MOL: A pioneer of "Mitsui + Sumitomo," and the face of "Mitsui of the Sea"
- Mitsui Group ⑪ Mitsui Sumitomo Insurance: From struggles to find merger partners to becoming the industry leader
- Mitsui Group ⑫ MODEC: A small elite unit supporting offshore energy plants
- Mitsui Group ⑬ Isetan Mitsukoshi Holdings: The "Mitsukoshi" that created Japan's department stores